Architecture and Design Building Codes and Regulations 2 — Questions and Answers
Question 1: What does 'Type I-A' construction classification indicate under the IBC?
- The most fire-resistive construction type with non-combustible materials (Correct answer)
- Light wood-frame construction with no fire rating requirements
- Unprotected steel frame construction
- Heavy timber construction
Correct answer: The most fire-resistive construction type with non-combustible materials
Type I-A is the highest fire-resistance construction type, requiring non-combustible materials with 3-hour rated structural frame and 2-hour floor/ceiling assemblies.
Question 2: The Americans with Disabilities Act (ADA) requires a maximum slope of _____ for an accessible ramp.
- 1:8 (12.5%)
- 1:10 (10%)
- 1:12 (8.33%) (Correct answer)
- 1:16 (6.25%)
Correct answer: 1:12 (8.33%)
ADA Standards require accessible ramps to have a maximum slope of 1:12 (one inch of rise for every 12 inches of horizontal run), equivalent to 8.33%.
Question 3: What is the primary purpose of a 'fire sprinkler system' in a building?
- To extinguish fires completely before the fire department arrives
- To control fire growth and suppress fire to allow safe occupant egress (Correct answer)
- To meet insurance requirements only
- To eliminate the need for fire-rated construction assemblies
Correct answer: To control fire growth and suppress fire to allow safe occupant egress
Sprinkler systems are designed to control fire growth and limit heat release, buying time for occupant evacuation — not necessarily to extinguish fires completely.
Question 4: Under the IBC, 'travel distance' in means of egress refers to:
- The total building evacuation time
- The maximum walking distance from any point in a floor to the nearest exit (Correct answer)
- The distance from the exit door to the public sidewalk
- The stair travel distance between floors
Correct answer: The maximum walking distance from any point in a floor to the nearest exit
Travel distance is the measured walking path from the most remote point in a room or floor to the nearest exit, with IBC maximums varying by occupancy and sprinkler status.
Question 5: What does 'occupant load' determine in building code compliance?
- The structural live load assigned to a floor area
- The number of people a space is designed to accommodate, which governs exit width, number of exits, and plumbing fixture counts (Correct answer)
- The maximum weight of furnishings allowed in a space
- The minimum ceiling height required for a given use
Correct answer: The number of people a space is designed to accommodate, which governs exit width, number of exits, and plumbing fixture counts
Occupant load is calculated by dividing floor area by the occupant load factor for that use, and it determines required egress capacity, number of exits, and sanitary facility counts.
Question 6: What is the minimum number of accessible parking spaces required in a lot of 100 total spaces under ADA standards?
- 2
- 4 (Correct answer)
- 5
- 8
Correct answer: 4
ADA Standards require a minimum of 4 accessible spaces for parking lots with 76–100 total spaces, including at least 1 van-accessible space.
Architecture and Design Building Codes and Regulations 2
What does 'Type I-A' construction classification indicate under the IBC?